/**
 * Calculadora de Descontos - Folha de Estilos Principal
 * 
 * Desenvolvido por: Felipo Bellini
 * Empresa: B20 Conteúdo Digital
 * 
 * © 2024 B20 Conteúdo Digital. Todos os direitos reservados.
 */

/*-----------------------------------------------------
  Índice:
  1. Variáveis e Configurações
  2. Reset e Estilos Base
  3. Layout e Contêineres
  4. Tipografia
  5. Cabeçalho e Navegação
  6. Botões e Formulários
  7. Cards e Painéis
  8. Calculadora Principal
  9. Resultados
  10. Histórico
  11. Como Usar
  12. FAQ
  13. Ferramentas Adicionais
  14. Rodapé
  15. Notificações e Feedback
  16. Utilidades e Helpers
  17. Responsividade
  18. Animações
  19. Tema Escuro
  20. Acessibilidade
  21. Impressão
-----------------------------------------------------*/

/*-----------------------------------------------------
  1. Variáveis e Configurações
-----------------------------------------------------*/
:root {
  /* Cores principais */
  --primary: #0066cc;
  --primary-light: #e6f2ff;
  --primary-dark: #004d99;
  --primary-gradient: linear-gradient(135deg, #0066cc, #0052a3);
  
  --secondary: #e67e22;
  --secondary-light: #fde3cd;
  --secondary-dark: #d35400;
  --secondary-gradient: linear-gradient(135deg, #e67e22, #d35400);
  
  --accent: #2ecc71;
  --accent-light: #d5f5e3;
  --accent-dark: #27ae60;
  
  /* Cores neutras */
  --black: #1a1a1a;
  --dark: #333333;
  --medium: #666666;
  --light: #999999;
  --lighter: #f5f5f5;
  --white: #ffffff;
  
  /* Cores de feedback */
  --success: #2ecc71;
  --info: #3498db;
  --warning: #f39c12;
  --danger: #e74c3c;
  
  /* Bordas e sombras */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-round: 50%;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.12);
  
  /* Espaçamentos */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
  
  /* Tipografia */
  --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Consolas', 'Monaco', 'Andale Mono', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-xxl: 1.5rem;
  --font-size-h3: 1.75rem;
  --font-size-h2: 2rem;
  --font-size-h1: 2.5rem;
  
  /* Transições */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-indices */
  --z-backdrop: 10;
  --z-drawer: 20;
  --z-sticky: 30;
  --z-navbar: 40;
  --z-dropdown: 50;
  --z-modal: 60;
  --z-toast: 70;
  --z-tooltip: 80;
}

/*-----------------------------------------------------
  2. Reset e Estilos Base
-----------------------------------------------------*/
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--lighter);
  overflow-x: hidden;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style-position: inside;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

input, textarea {
  width: 100%;
}

/* Esconde elementos de leitores de tela visualmente */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/*-----------------------------------------------------
  3. Layout e Contêineres
-----------------------------------------------------*/
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-xxl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-title {
  font-size: var(--font-size-h2);
  color: var(--primary);
  margin-bottom: var(--space-sm);
  font-weight: 700;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--medium);
  max-width: 700px;
  margin: 0 auto;
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

/*-----------------------------------------------------
  4. Tipografia
-----------------------------------------------------*/
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  color: var(--dark);
  margin-bottom: var(--space-md);
  font-weight: 600;
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

p {
  margin-bottom: var(--space-md);
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-primary {
  color: var(--primary);
}

.text-secondary {
  color: var(--secondary);
}

.text-accent {
  color: var(--accent);
}

.text-success {
  color: var(--success);
}

.text-warning {
  color: var(--warning);
}

.text-danger {
  color: var(--danger);
}

.text-small {
  font-size: var(--font-size-sm);
}

.text-large {
  font-size: var(--font-size-lg);
}

.font-bold {
  font-weight: 700;
}

.font-medium {
  font-weight: 500;
}

.uppercase {
  text-transform: uppercase;
}

.line-through {
  text-decoration: line-through;
}

/*-----------------------------------------------------
  5. Cabeçalho e Navegação
-----------------------------------------------------*/
.header {
  background-color: var(--primary);
  background-image: var(--primary-gradient);
  color: var(--white);
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: var(--z-navbar);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xxl);
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--white);
  color: var(--primary);
  border-radius: var(--radius-round);
  font-weight: bold;
}

.nav {
  display: flex;
  gap: var(--space-lg);
  align-items: end;
}

.nav-link {
  color: var(--white);
  font-weight: 500;
  transition: opacity var(--transition-fast);
  position: relative;
  padding: var(--space-sm) 0;
}

.nav-link:hover {
  opacity: 0.9;
  color: var(--white);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--white);
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.mobile-menu-button {
  display: none;
  background: transparent;
  border: none;
  color: var(--white);
  width: 40px;
  height: 40px;
  padding: 0;
}

.menu-icon {
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--white);
  margin: 0 auto;
  transition: background-color var(--transition-fast);
}

.menu-icon::before,
.menu-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--white);
  left: 0;
  transition: transform var(--transition-fast);
}

.menu-icon::before {
  top: -8px;
}

.menu-icon::after {
  top: 8px;
}

.mobile-menu-button.active .menu-icon {
  background-color: transparent;
}

.mobile-menu-button.active .menu-icon::before {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-button.active .menu-icon::after {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--primary);
  z-index: var(--z-drawer);
  padding: var(--space-xxl) var(--space-md);
  transform: translateY(-100%);
  transition: transform var(--transition-normal);
}

.mobile-menu.active {
  transform: translateY(0);
}

.mobile-menu-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.mobile-menu-nav a {
  color: var(--white);
  font-size: var(--font-size-xl);
  font-weight: 600;
}

/*-----------------------------------------------------
  6. Botões e Formulários
-----------------------------------------------------*/
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  background-color: var(--primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-md);
  text-align: center;
  cursor: pointer;
  transition: 
    background-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  user-select: none;
  text-decoration: none;
}

.btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--white);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--secondary);
}

.btn-secondary:hover {
  background-color: var(--secondary-dark);
}

.btn-accent {
  background-color: var(--accent);
}

.btn-accent:hover {
  background-color: var(--accent-dark);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--primary);
  border: none;
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  background-color: var(--primary-light);
  color: var(--primary);
  transform: none;
  box-shadow: none;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn-full {
  width: 100%;
}

.btn-icon {
  width: 18px;
  height: 18px;
}

.btn-group {
  display: flex;
  gap: var(--space-sm);
}

/* Formulários */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  color: var(--dark);
}

.form-help {
  display: block;
  margin-top: var(--space-xs);
  color: var(--light);
  font-size: var(--font-size-sm);
}

.input-wrapper {
  position: relative;
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--dark);
  background-color: var(--white);
  background-clip: padding-box;
  border: 1px solid #ddd;
  border-radius: var(--radius-md);
  transition: 
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
}

.form-control::placeholder {
  color: var(--light);
}

.form-control-prefix {
  padding-left: 2.5rem;
}

.form-control-suffix {
  padding-right: 2.5rem;
}

.form-control-prepend,
.form-control-append {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--medium);
  pointer-events: none;
}

.form-control-prepend {
  left: 1rem;
}

.form-control-append {
  right: 1rem;
}

.input-invalid {
  border-color: var(--danger);
}

.input-invalid:focus {
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15);
}

.error-message {
  color: var(--danger);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 16px;
  padding-right: 2.5rem;
}

/* Switch */
.switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
}

.switch-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-track {
  display: inline-block;
  width: 50px;
  height: 26px;
  background-color: #ccc;
  border-radius: 13px;
  transition: var(--transition-fast);
  position: relative;
}

.switch-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background-color: white;
  border-radius: var(--radius-round);
  transition: var(--transition-fast);
}

.switch-input:checked + .switch-track {
  background-color: var(--primary);
}

.switch-input:checked + .switch-track .switch-thumb {
  transform: translateX(24px);
}

.switch-label {
  font-weight: 500;
}

/*-----------------------------------------------------
  7. Cards e Painéis
-----------------------------------------------------*/
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: 
    transform var(--transition-normal),
    box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.card-interactive {
  cursor: pointer;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 0;
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--medium);
  margin-top: var(--space-xs);
}

/* Panel */
.panel {
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.panel-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 0;
}

.panel-body {
  margin-bottom: var(--space-md);
}

.panel-footer {
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding-top: var(--space-md);
  text-align: right;
}

/*-----------------------------------------------------
  8. Calculadora Principal
-----------------------------------------------------*/
.calculator-section {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.calculator-card,
.result-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.calculator-card .card-body {
  flex: 1;
}

/* Campo de preço original */
.price-input-wrapper {
  position: relative;
}

.price-input-wrapper .form-control-prepend {
  font-weight: 500;
}

/* Seletor de tipo de desconto */
.discount-type-wrapper select.form-control {
  font-weight: 500;
}

/* Campo de valor de desconto */
.discount-value-wrapper {
  position: relative;
}

.discount-value-wrapper .form-control-append {
  font-weight: 500;
}

/* Botão de calcular */
.calculate-btn {
  margin-top: var(--space-lg);
  background-image: var(--primary-gradient);
}

/*-----------------------------------------------------
  9. Resultados
-----------------------------------------------------*/
.result-card {
  display: flex;
  flex-direction: column;
}

.result-card .card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.result-list {
  list-style: none;
  margin-bottom: var(--space-lg);
}

.result-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.result-label {
  color: var(--medium);
}

.result-value {
  font-weight: 600;
  color: var(--dark);
}

/* Barra de comparação visual */
.comparison-bar {
  height: 40px;
  background-color: #f5f5f5;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.comparison-original {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--space-md);
  color: var(--danger);
  font-weight: 500;
  background-color: rgba(231, 76, 60, 0.1);
  border-right: 2px dashed rgba(231, 76, 60, 0.5);
}

.comparison-final {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background-color: rgba(46, 204, 113, 0.1);
  display: flex;
  align-items: center;
  padding-left: var(--space-md);
  color: var(--success);
  font-weight: 500;
  transition: width 0.8s ease;
}

/* Resultado principal */
.main-result {
  margin-top: auto;
  background-color: var(--primary-light);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.main-result-label {
  font-size: var(--font-size-lg);
  color: var(--primary);
  margin-bottom: var(--space-xs);
}

.main-result-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

/* Ações */
.actions-container {
  display: flex;
  gap: var(--space-md);
}

/*-----------------------------------------------------
  10. Histórico
-----------------------------------------------------*/
.history-section {
  background-color: var(--lighter);
  padding: var(--space-xxl) 0;
}

.history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: var(--space-md);
}

.history-card {
  position: relative;
}

.history-card:hover {
  transform: translateY(-5px);
}

.history-date {
  font-size: var(--font-size-xs);
  color: var(--light);
  margin-bottom: var(--space-xs);
}

.history-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.history-detail {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
  font-size: var(--font-size-sm);
}

.history-price {
  margin-top: var(--space-sm);
  font-weight: 700;
  font-size: var(--font-size-xl);
  text-align: right;
  color: var(--primary);
}

.history-delete {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--medium);
  border: none;
  border-radius: var(--radius-round);
  opacity: 0;
  transition: 
    opacity var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.history-card:hover .history-delete {
  opacity: 1;
}

.history-delete:hover {
  background-color: var(--danger);
  color: var(--white);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-xl);
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.pagination-info {
  color: var(--medium);
}

/*-----------------------------------------------------
  11. Como Usar
-----------------------------------------------------*/
.how-to-section {
  padding: var(--space-xxl) 0;
  background-color: var(--white);
  position: relative;
  overflow: hidden;
}

.how-to-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.1) 0%, rgba(0, 102, 204, 0) 70%);
  z-index: 0;
}

.how-to-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(230, 126, 34, 0.1) 0%, rgba(230, 126, 34, 0) 70%);
  z-index: 0;
}

.workflow-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto 60px;
  z-index: 1;
}

.workflow-line {
  position: absolute;
  top: 50px;
  bottom: 50px;
  left: 47px;
  width: 4px;
  background-color: var(--primary-light);
  z-index: -1;
}

.workflow-step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.step-number {
  width: 50px;
  height: 50px;
  background-color: var(--primary);
  color: var(--white);
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  box-shadow: 0 4px 8px rgba(0, 102, 204, 0.2);
  flex-shrink: 0;
  border: 4px solid var(--white);
  z-index: 1;
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: var(--font-size-xl);
  color: var(--dark);
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.step-description {
  color: var(--medium);
  margin-bottom: var(--space-sm);
}

.step-visual {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-sm);
}

.step-demo {
  max-width: 250px;
  margin: 0 auto;
}

.step-icon {
  margin-right: var(--space-md);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background-color: var(--primary-light);
  border-radius: var(--radius-lg);
}

.input-demo, .select-demo {
  background-color: var(--white);
  border: 1px solid #eee;
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-sm);
}

.input-label {
  font-size: var(--font-size-xs);
  color: var(--light);
  margin-bottom: var(--space-xs);
}

.input-value {
  font-weight: 500;
}

.select-option {
  padding: var(--space-xs) 0;
}

.select-option.selected {
  color: var(--primary);
  font-weight: 500;
}

.result-demo {
  text-align: center;
}

.price-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.original-price {
  text-decoration: line-through;
  color: var(--danger);
}

.final-price {
  color: var(--success);
  font-weight: 600;
}

.savings-info {
  font-size: var(--font-size-sm);
  color: var(--primary);
}

.step-tip {
  background-color: var(--secondary-light);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--secondary-dark);
}

.step-tip svg {
  color: var(--secondary);
  flex-shrink: 0;
}

.step-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.how-to-cta {
  text-align: center;
  margin-top: var(--space-xl);
}

.btn-arrow svg {
  transition: transform var(--transition-fast);
}

.btn-arrow:hover svg {
  transform: translateX(5px);
}

/* Resultado especial */
.result-step .step-number {
  background-color: var(--success);
  box-shadow: 0 4px 8px rgba(46, 204, 113, 0.2);
}

.result-step .step-icon {
  color: var(--success);
  background-color: var(--accent-light);
}

/*-----------------------------------------------------
  12. FAQ
-----------------------------------------------------*/
.faq-section {
  padding: var(--space-xxl) 0;
  background-color: var(--lighter);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--space-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--white);
}

.faq-question {
  padding: var(--space-md) var(--space-lg);
  background-color: var(--white);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-fast);
}

.faq-question h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 500;
}

.faq-icon {
  font-size: 1.5rem;
  color: var(--primary);
  transition: transform var(--transition-fast);
}

.faq-question:hover {
  background-color: var(--primary-light);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-answer-content {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--medium);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-item.active .faq-answer {
  max-height: 1000px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.faq-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-group-title {
  font-size: var(--font-size-xl);
  color: var(--primary);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--primary-light);
}

/*-----------------------------------------------------
  13. Ferramentas Adicionais
-----------------------------------------------------*/
.tools-section {
  padding: var(--space-xxl) 0;
  background-color: var(--white);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.comparison-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.comparison-result {
  margin-top: var(--space-lg);
  background-color: var(--primary-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.comparison-bars {
  margin-bottom: var(--space-md);
}

.comparison-bar-item {
  margin-bottom: var(--space-sm);
}

.comparison-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.comparison-bar {
  height: 10px;
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-xs);
}

.comparison-fill {
  height: 100%;
  width: 0;
  background-color: var(--primary);
  border-radius: var(--radius-sm);
  transition: width 0.8s ease;
}

.comparison-value {
  text-align: right;
  font-weight: 500;
}

.comparison-conclusion {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.conclusion-label {
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.conclusion-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-xs);
}

.conclusion-savings {
  color: var(--success);
  font-weight: 500;
}

.installment-result {
  margin-top: var(--space-lg);
  background-color: var(--primary-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.installment-details {
  margin-bottom: var(--space-md);
}

.detail-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

.detail-label {
  color: var(--medium);
}

.detail-value {
  font-weight: 500;
}

.installment-table {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.installment-table-header {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.installment-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/*-----------------------------------------------------
  14. Rodapé
-----------------------------------------------------*/
.footer {
  background-color: var(--primary);
  background-image: var(--primary-gradient);
  color: var(--white);
  padding: var(--space-xxl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.footer-desc {
  opacity: 0.8;
  margin-bottom: var(--space-md);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-round);
  color: var(--white);
  transition: 
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.social-link:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
  color: var(--white);
}

.footer-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  position: relative;
  padding-bottom: var(--space-sm);
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--secondary);
}

.footer-links,
.footer-contact {
  list-style: none;
}

.footer-links li,
.footer-contact li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: var(--space-xs);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.company-link a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: underline;
}

.company-link a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.copyright {
  opacity: 0.7;
  font-size: var(--font-size-sm);
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
}

.footer-legal a:hover {
  color: var(--white);
  text-decoration: underline;
}

/* Acordeão em mobile */
.footer-accordion-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-sm);
}

.footer-accordion-trigger {
  width: 100%;
  text-align: left;
  padding: var(--space-sm) 0;
  color: var(--white);
  font-weight: 600;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-icon {
  font-size: 1.2rem;
  transition: transform var(--transition-fast);
}

.footer-accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.footer-accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.footer-accordion-item.active .footer-accordion-panel {
  max-height: 500px;
}

/*-----------------------------------------------------
  15. Notificações e Feedback
-----------------------------------------------------*/
.notification {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--white);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-width: 320px;
  max-width: 90%;
  z-index: var(--z-toast);
  opacity: 0;
  transition: 
    transform var(--transition-normal),
    opacity var(--transition-normal);
}

.notification.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.notification-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.notification-content {
  flex: 1;
}

.notification-title {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.notification-message {
  color: var(--medium);
  font-size: var(--font-size-sm);
}

.notification-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--light);
  cursor: pointer;
  padding: var(--space-xs);
}

.notification-success .notification-icon {
  color: var(--success);
}

.notification-error .notification-icon {
  color: var(--danger);
}

.notification-warning .notification-icon {
  color: var(--warning);
}

.notification-info .notification-icon {
  color: var(--info);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--dark);
  color: var(--white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  z-index: var(--z-toast);
  opacity: 0;
  transition: 
    transform var(--transition-normal),
    opacity var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/*-----------------------------------------------------
  16. Utilidades e Helpers
-----------------------------------------------------*/
/* Margens */
.m-0 { margin: 0; }
.mt-0 { margin-top: 0; }
.mr-0 { margin-right: 0; }
.mb-0 { margin-bottom: 0; }
.ml-0 { margin-left: 0; }

.m-sm { margin: var(--space-sm); }
.mt-sm { margin-top: var(--space-sm); }
.mr-sm { margin-right: var(--space-sm); }
.mb-sm { margin-bottom: var(--space-sm); }
.ml-sm { margin-left: var(--space-sm); }

.m-md { margin: var(--space-md); }
.mt-md { margin-top: var(--space-md); }
.mr-md { margin-right: var(--space-md); }
.mb-md { margin-bottom: var(--space-md); }
.ml-md { margin-left: var(--space-md); }

.m-lg { margin: var(--space-lg); }
.mt-lg { margin-top: var(--space-lg); }
.mr-lg { margin-right: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.ml-lg { margin-left: var(--space-lg); }

.m-xl { margin: var(--space-xl); }
.mt-xl { margin-top: var(--space-xl); }
.mr-xl { margin-right: var(--space-xl); }
.mb-xl { margin-bottom: var(--space-xl); }
.ml-xl { margin-left: var(--space-xl); }

/* Paddings */
.p-0 { padding: 0; }
.pt-0 { padding-top: 0; }
.pr-0 { padding-right: 0; }
.pb-0 { padding-bottom: 0; }
.pl-0 { padding-left: 0; }

.p-sm { padding: var(--space-sm); }
.pt-sm { padding-top: var(--space-sm); }
.pr-sm { padding-right: var(--space-sm); }
.pb-sm { padding-bottom: var(--space-sm); }
.pl-sm { padding-left: var(--space-sm); }

.p-md { padding: var(--space-md); }
.pt-md { padding-top: var(--space-md); }
.pr-md { padding-right: var(--space-md); }
.pb-md { padding-bottom: var(--space-md); }
.pl-md { padding-left: var(--space-md); }

.p-lg { padding: var(--space-lg); }
.pt-lg { padding-top: var(--space-lg); }
.pr-lg { padding-right: var(--space-lg); }
.pb-lg { padding-bottom: var(--space-lg); }
.pl-lg { padding-left: var(--space-lg); }

.p-xl { padding: var(--space-xl); }
.pt-xl { padding-top: var(--space-xl); }
.pr-xl { padding-right: var(--space-xl); }
.pb-xl { padding-bottom: var(--space-xl); }
.pl-xl { padding-left: var(--space-xl); }

/* Flexbox */
.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.justify-center { justify-content: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }
.align-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-1 { flex: 1; }

/* Layout */
.w-100 { width: 100%; }
.h-100 { height: 100%; }
.mw-100 { max-width: 100%; }

/* Exibição */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }

/* Cores de fundo */
.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-accent { background-color: var(--accent); }
.bg-light { background-color: var(--lighter); }
.bg-white { background-color: var(--white); }
.bg-success { background-color: var(--success); }
.bg-danger { background-color: var(--danger); }
.bg-warning { background-color: var(--warning); }
.bg-info { background-color: var(--info); }

/* Bordas */
.border { border: 1px solid rgba(0, 0, 0, 0.1); }
.border-top { border-top: 1px solid rgba(0, 0, 0, 0.1); }
.border-right { border-right: 1px solid rgba(0, 0, 0, 0.1); }
.border-bottom { border-bottom: 1px solid rgba(0, 0, 0, 0.1); }
.border-left { border-left: 1px solid rgba(0, 0, 0, 0.1); }

.border-0 { border: none; }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-round); }

/* Sombras */
.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Posicionamento */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

/* Visibilidade */
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Utilitários responsivos */
.mobile-only { display: none; }
.tablet-hidden { display: initial; }
.desktop-only { display: initial; }

/* Animações */
.fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 102, 204, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(0, 102, 204, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 102, 204, 0);
  }
}

/* Utilizada pelo JS para destacar o preço final em cálculo */
.pulse-animation {
  animation: pulse 2s 1;
}

/*-----------------------------------------------------
  17. Responsividade
-----------------------------------------------------*/
/* Tablet e abaixo */
@media (max-width: 991px) {
  .calculator-section {
    grid-template-columns: 1fr;
  }
  
  .calculator-card,
  .result-card {
    margin-bottom: 0;
  }
  
  .workflow-step {
    flex-direction: column;
  }
  
  .step-visual {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --space-xxl: 2rem;
    --space-xl: 1.5rem;
    --space-lg: 1.25rem;
  }
  
  .section-title {
    font-size: var(--font-size-xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-md);
  }
  
  .mobile-only { display: initial; }
  .tablet-hidden { display: none; }
  .desktop-only { display: none; }
  
  /* Header Móvel */
  .logo-icon {
    width: 32px;
    height: 32px;
  }
  
  .nav {
    display: none;
  }
  
  .mobile-menu-button {
    display: block;
  }
  
  .mobile-menu {
    display: block;
  }
  
  /* Grids Responsivos */
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  /* Histórico */
  .history-grid {
    grid-template-columns: 1fr;
  }
  
  /* Como Usar em Mobile */
  .workflow-container {
    position: relative;
    margin-left: 20px;
    padding-left: 30px;
  }
  
  .workflow-line {
    left: 0;
    top: 0;
    bottom: 0;
  }
  
  .step-number {
    position: absolute;
    left: -50px;
    top: 0;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  
  .step-icon {
    width: 50px;
    height: 50px;
  }
  
  /* Ferramentas Adicionais */
  .comparison-options {
    grid-template-columns: 1fr;
  }
  
  /* Rodapé */
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  
  .footer-legal {
    flex-direction: column;
    gap: var(--space-md);
  }
}

/* Mobile pequeno */
@media (max-width: 480px) {
  :root {
    --font-size-h1: 1.8rem;
    --font-size-h2: 1.6rem;
    --font-size-h3: 1.4rem;
  }
  
  .container {
    padding: 0 var(--space-sm);
  }
  
  .card-body {
    padding: var(--space-md);
  }
  
  .card-header,
  .card-footer {
    padding: var(--space-sm) var(--space-md);
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .actions-container {
    flex-direction: column;
  }
  
  .notification {
    min-width: 280px;
    padding: var(--space-sm);
  }
}

/* Orientação paisagem em mobile */
@media (max-width: 767px) and (orientation: landscape) {
  .mobile-menu-nav {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* Telas grandes */
@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }
  
  html {
    font-size: 18px;
  }
}

/*-----------------------------------------------------
  18. Animações
-----------------------------------------------------*/
.highlight-animation {
  animation: highlight 1s ease-out;
}

@keyframes highlight {
  0% { box-shadow: 0 0 0 rgba(0, 102, 204, 0); }
  50% { box-shadow: 0 0 20px rgba(0, 102, 204, 0.5); }
  100% { box-shadow: var(--shadow-md); }
}

.scale-in {
  animation: scaleIn 0.3s ease-out forwards;
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.slide-in-right {
  animation: slideInRight 0.3s ease-out forwards;
}

@keyframes slideInRight {
  from {
    transform: translateX(30px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.slide-in-left {
  animation: slideInLeft 0.3s ease-out forwards;
}

@keyframes slideInLeft {
  from {
    transform: translateX(-30px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.slide-in-up {
  animation: slideInUp 0.3s ease-out forwards;
}

@keyframes slideInUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/*-----------------------------------------------------
  19. Tema Escuro
-----------------------------------------------------*/
[data-theme="dark"] {
  --primary: #4d94ff;
  --primary-light: rgba(77, 148, 255, 0.15);
  --primary-dark: #80b3ff;
  --primary-gradient: linear-gradient(135deg, #4d94ff, #3a7bd5);
  
  --secondary: #ff9e4f;
  --secondary-light: rgba(255, 158, 79, 0.15);
  --secondary-dark: #ffb67a;
  
  --accent: #4caf50;
  --accent-light: rgba(76, 175, 80, 0.15);
  
  --dark: #e0e0e0;
  --medium: #a0a0a0;
  --light: #707070;
  --lighter: #1a1a1a;
  --white: #1e1e1e;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 15px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.5);
  
  background-color: #121212;
  color: var(--dark);
}

/* Melhorias de contraste e legibilidade no tema escuro */
[data-theme="dark"] .nav-link {
  color: #e0e0e0;
}

[data-theme="dark"] .card,
[data-theme="dark"] .panel,
[data-theme="dark"] .result-card {
  background-color: #1e1e1e;
  border-color: #333;
}

[data-theme="dark"] .section-title h1,
[data-theme="dark"] .section-title h2,
[data-theme="dark"] .card-title,
[data-theme="dark"] .result-label,
[data-theme="dark"] .result-value {
  color: #e6e6e6;
}

[data-theme="dark"] .comparison-bar {
  background-color: #2a2a2a;
}

[data-theme="dark"] .comparison-original {
  background-color: rgba(231, 76, 60, 0.2);
  color: #ffb3ab;
  border-right-color: rgba(231, 76, 60, 0.6);
}

[data-theme="dark"] .comparison-final {
  background-color: rgba(46, 204, 113, 0.2);
  color: #b6f2c7;
}

[data-theme="dark"] .card,
[data-theme="dark"] .panel {
  background-color: #1e1e1e;
  border-color: #333;
}

[data-theme="dark"] .form-control {
  background-color: #272727;
  border-color: #444;
  color: var(--dark);
}

[data-theme="dark"] .section {
  border-color: #333;
}

[data-theme="dark"] .how-to-section,
[data-theme="dark"] .tools-section {
  background-color: #121212;
}

[data-theme="dark"] .faq-section {
  background-color: #1a1a1a;
}

[data-theme="dark"] .faq-question,
[data-theme="dark"] .faq-item {
  background-color: #1e1e1e;
}

[data-theme="dark"] .faq-question:hover {
  background-color: rgba(77, 148, 255, 0.1);
}

[data-theme="dark"] .main-result {
  background-color: rgba(77, 148, 255, 0.1);
}

[data-theme="dark"] .comparison-result,
[data-theme="dark"] .installment-result {
  background-color: rgba(77, 148, 255, 0.1);
}

[data-theme="dark"] .step-visual,
[data-theme="dark"] .input-demo,
[data-theme="dark"] .select-demo,
[data-theme="dark"] .result-demo {
  background-color: #1e1e1e;
  border-color: #333;
}

[data-theme="dark"] .step-tip {
  background-color: rgba(255, 158, 79, 0.1);
  color: var(--secondary);
}

[data-theme="dark"] .workflow-line {
  background-color: rgba(77, 148, 255, 0.2);
}

[data-theme="dark"] .bg-light {
  background-color: #1a1a1a;
}

[data-theme="dark"] .toast {
  background-color: #333;
}

/*-----------------------------------------------------
  20. Acessibilidade
-----------------------------------------------------*/
/* Melhor visibilidade para foco via teclado */
:focus {
  outline: none;
}

.keyboard-navigation :focus {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* Áreas tocáveis maiores em mobile */
@media (hover: none) {
  .nav-link, 
  .btn,
  .form-control,
  select.form-control,
  .mobile-menu-nav a,
  .footer-links a {
    min-height: 44px;
  }
  
  .form-control {
    font-size: 16px; /* Evita zoom em iOS */
  }
}

/*-----------------------------------------------------
  21. Impressão
-----------------------------------------------------*/
@media print {
  /* Esconde elementos não essenciais */
  header, 
  footer,
  .theme-switch,
  .preferences-panel,
  .save-share,
  .history-section,
  .faq-section,
  .how-to-section,
  .tools-section {
    display: none !important;
  }
  
  /* Ajusta o layout para impressão */
  body {
    background-color: white !important;
    color: black !important;
    font-size: 12pt;
  }
  
  .calculator-section {
    display: flex;
    flex-direction: column;
  }
  
  .result-card {
    page-break-inside: avoid;
  }
  
  /* Adiciona informações de rodapé para impressão */
  .container::after {
    content: "Calculadora de Descontos - CalculadoraDeDescontos.com.br";
    display: block;
    text-align: center;
    margin-top: 30px;
    font-size: 10pt;
    color: #666;
  }
}